CVE-2026-18948

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreHIGH confidence

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-10. a secondary CVSS source baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.9Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in Feast. The system improperly deserializes user-defined functions (UDFs) stored in its registry, which are serialized using the 'dill' library. This allows a remote attacker to store a malicious UDF, leading to unauthenticated arbitrary code execution on the feature server in default configurations. An authenticated attacker can also achieve arbitrary code execution on the registry server by bypassing authorization checks during deserialization. This vulnerability can result in cross-tenant data access and lateral movement within the system.

CVSS v3
9.9
EG Score
9.9(high)
EG Risk
45(Track)
EG Risk 45/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity99% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
50%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 19, 2026

Advisory Details (5)

Auto-updated Aug 19, 2026
Patch available. Sources: redhat.
redhat

2511167 – (CVE-2026-18948) CVE-2026-18948 feast: Feast: Unsafe dill deserialization of registry-stored UDFs — RCE on feature server and registry server

https://bugzilla.redhat.com/show_bug.cgi?id=2511167
redhat Patch Available

CVE-2026-18948 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-18948
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:53263
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:53262
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:53261

Vendor Advisories for CVE-2026-18948(4)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhoai/odh-feature-server-rhel9:17861072782026-08-11redhat
redhatrhoai/odh-feature-server-rhel9:17861100332026-08-11redhat
redhatrhoai/odh-feature-server-rhel9:17861100512026-08-11redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 103× in last 7d / 162× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 162 total refreshes for this CVE.

  1. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 22:25 UTCVendor advisory
  3. 2026-08-20 22:25 UTCGHSA enrichment
  4. 2026-08-20 18:33 UTCVendor advisory
  5. 2026-08-20 18:33 UTCGHSA enrichment
  6. 2026-08-20 14:41 UTCVendor advisory
  7. 2026-08-20 14:41 UTCGHSA enrichment
  8. 2026-08-20 10:49 UTCVendor advisory
  9. 2026-08-20 10:49 UTCGHSA enrichment
  10. 2026-08-20 06:56 UTCVendor advisory
  11. 2026-08-20 06:56 UTCGHSA enrichment
  12. 2026-08-20 03:04 UTCVendor advisory
  13. 2026-08-20 03:03 UTCGHSA enrichment
  14. 2026-08-19 23:11 UTCVendor advisory
  15. 2026-08-19 23:11 UTCGHSA enrichment
  16. 2026-08-19 19:18 UTCEG score recompute
  17. 2026-08-19 19:18 UTCVendor advisory
  18. 2026-08-19 19:18 UTCGHSA enrichment
  19. 2026-08-19 17:03 UTCEPSS rescore
  20. 2026-08-19 15:20 UTCVendor advisory
  21. 2026-08-19 15:20 UTCGHSA enrichment
  22. 2026-08-19 11:22 UTCEG score recompute
  23. 2026-08-19 11:22 UTCVendor advisory
  24. 2026-08-19 11:22 UTCGHSA enrichment
  25. 2026-08-19 10:24 UTCEG score recompute
Show 75 more
  1. 2026-08-19 10:24 UTCVendor advisory
  2. 2026-08-19 10:24 UTCGHSA enrichment
  3. 2026-08-19 09:16 UTCVendor advisory
  4. 2026-08-19 09:16 UTCGHSA enrichment
  5. 2026-08-19 05:24 UTCVendor advisory
  6. 2026-08-19 05:24 UTCGHSA enrichment
  7. 2026-08-19 01:32 UTCVendor advisory
  8. 2026-08-19 01:32 UTCGHSA enrichment
  9. 2026-08-18 21:39 UTCVendor advisory
  10. 2026-08-18 21:39 UTCGHSA enrichment
  11. 2026-08-18 17:24 UTCEG score recompute
  12. 2026-08-18 17:24 UTCVendor advisory
  13. 2026-08-18 17:24 UTCGHSA enrichment
  14. 2026-08-18 13:48 UTCEPSS rescore
  15. 2026-08-18 12:45 UTCVendor advisory
  16. 2026-08-18 12:45 UTCGHSA enrichment
  17. 2026-08-18 08:39 UTCVendor advisory
  18. 2026-08-18 08:39 UTCGHSA enrichment
  19. 2026-08-18 04:45 UTCVendor advisory
  20. 2026-08-18 04:45 UTCGHSA enrichment
  21. 2026-08-18 00:53 UTCVendor advisory
  22. 2026-08-18 00:53 UTCGHSA enrichment
  23. 2026-08-17 20:53 UTCVendor advisory
  24. 2026-08-17 20:53 UTCGHSA enrichment
  25. 2026-08-17 17:01 UTCEG score recompute
  26. 2026-08-17 17:01 UTCVendor advisory
  27. 2026-08-17 17:01 UTCGHSA enrichment
  28. 2026-08-17 13:47 UTCEPSS rescore
  29. 2026-08-17 13:09 UTCVendor advisory
  30. 2026-08-17 13:09 UTCGHSA enrichment
  31. 2026-08-17 09:16 UTCVendor advisory
  32. 2026-08-17 09:16 UTCGHSA enrichment
  33. 2026-08-17 05:24 UTCVendor advisory
  34. 2026-08-17 05:24 UTCGHSA enrichment
  35. 2026-08-17 01:29 UTCVendor advisory
  36. 2026-08-17 01:29 UTCGHSA enrichment
  37. 2026-08-16 21:37 UTCVendor advisory
  38. 2026-08-16 21:37 UTCGHSA enrichment
  39. 2026-08-16 17:45 UTCEG score recompute
  40. 2026-08-16 17:45 UTCVendor advisory
  41. 2026-08-16 17:45 UTCGHSA enrichment
  42. 2026-08-16 14:56 UTCEPSS rescore
  43. 2026-08-16 13:53 UTCVendor advisory
  44. 2026-08-16 13:53 UTCGHSA enrichment
  45. 2026-08-16 10:01 UTCVendor advisory
  46. 2026-08-16 10:01 UTCGHSA enrichment
  47. 2026-08-16 06:09 UTCVendor advisory
  48. 2026-08-16 06:08 UTCGHSA enrichment
  49. 2026-08-16 02:16 UTCEG score recompute
  50. 2026-08-16 02:16 UTCVendor advisory
  51. 2026-08-16 02:16 UTCGHSA enrichment
  52. 2026-08-16 02:14 UTCEPSS rescore
  53. 2026-08-15 22:24 UTCVendor advisory
  54. 2026-08-15 22:24 UTCGHSA enrichment
  55. 2026-08-15 18:32 UTCVendor advisory
  56. 2026-08-15 18:32 UTCGHSA enrichment
  57. 2026-08-15 14:40 UTCVendor advisory
  58. 2026-08-15 14:40 UTCGHSA enrichment
  59. 2026-08-15 10:48 UTCVendor advisory
  60. 2026-08-15 10:48 UTCGHSA enrichment
  61. 2026-08-15 06:56 UTCVendor advisory
  62. 2026-08-15 06:56 UTCGHSA enrichment
  63. 2026-08-15 03:04 UTCEG score recompute
  64. 2026-08-15 03:04 UTCVendor advisory
  65. 2026-08-15 03:04 UTCGHSA enrichment
  66. 2026-08-15 01:30 UTCEPSS rescore
  67. 2026-08-14 23:11 UTCVendor advisory
  68. 2026-08-14 23:11 UTCGHSA enrichment
  69. 2026-08-14 19:19 UTCVendor advisory
  70. 2026-08-14 19:19 UTCGHSA enrichment
  71. 2026-08-14 16:55 UTCVendor advisory
  72. 2026-08-14 16:55 UTCGHSA enrichment
  73. 2026-08-14 13:03 UTCVendor advisory
  74. 2026-08-14 13:03 UTCGHSA enrichment
  75. 2026-08-14 09:11 UTCVendor advisory

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-18948?
CVE-2026-18948 is a critical vulnerability published on August 10, 2026. A flaw was found in Feast. The system improperly deserializes user-defined functions (UDFs) stored in its registry, which are serialized using the 'dill' library. This allows a remote attacker to store a malicious UDF, leading to unauthenticated arbitrary code execution on the feature server in…
When was CVE-2026-18948 disclosed?
CVE-2026-18948 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18948 actively exploited?
CVE-2026-18948 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 49.9% of all scored CVEs.
What is the CVSS score of CVE-2026-18948?
CVE-2026-18948 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-18948?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18948, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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